Aer Lingus have begun tests at JFK T5, parked EI-ELA at one of the gates yesterday and rumoured start date is March 17th for a St Patrick's Day celebration.
Indeed, some pics can be found here of EI-ELA at T5, Gate 14 for testing yesterday.
Instagram photo by @annie_migs (Annie Migs) | Statigram
Instagram photos for tag #aerlingus | Statigram